class conv
{
     private:
	void DMS_RAD(int Deg,int Min,double Sec,double* Rad);
	void RAD_DMS(double Rad,int* Deg,int* Min,double* Sec);
	double ConvergeAngle(double B,double l);
	void Bl_XY(double B,double l,double *X,double *Y);
     public:
	void CrossBelt(double* X,double* Y,int* num_belt);
	void XY_BLCon(double X,double Y,int num_belt,double *B,double *L,\
			   double* radCon);
	void WGS84Geo_BJ54Gauss(double B84,double L84,double H84,\
		      double* X54Gauss,double* Y54Gauss,int* numBelt);

};